Renormalisation group study of polyelectrolyte chains

The behaviour of long unscreened polyelectrolyte chains is studied using field-theoretic renormalisation group methods based on the renormalisation procedure of t'Hooft and Veltman (1972). It is shown that a fixed point exists near dimension six and details are given of the calculation of the critical exponents up to O( epsilon 2). It is also shown exactly that, as long as a fixed point exists, the radius of gyration RG is given by RG approximately Nv with nu =2/(d-2).